<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <title>Document</title>
    <style type="text/css">
        .box{
            width: 100px;
            height: 50px;
            margin: 200px auto;
            background: blue;
            text-align: center;
            border-radius: 5px;
        }
        .box p{
            color: #fff;
            line-height: 50px;
        }
    </style>
</head>
<body>
    <a href="html/index.html">
        <div class="box">
            <p>点击进入主页</p>
        </div>
    </a>
</body>
</html>